A typical Crossover Frequency would be 80 Hz. MARKETING NOTE:  Subwoofer buyers typically have two conflicting demands. Since they are smaller, they are also often less expensive. THAT'S the reason it gets touted as a good starting point for your Crossover setting -- until you have time to think things through more carefully. Plug the main outputs of your console into the GEQ, then into the inputs of the crossover. I am not really sure whether I … Console Main Outputs > Graphic EQs > Crossover. All three KS Series Active Subwoofers feature powerful DSP, which allow you to adjust a number of useful parameters. Typically, a low-pass crossover is anywhere from 40Hz and could go up to 60Hz to 100Hz. We recommend settings to a higher frequency than the crossover frequency when small speakers are used. My HSU Research speakers are rated down to 60 Hz. If they are rated down to 30 Hz, the Crossover Frequency should be no lower than 60 Hz. We've already talked about ONE problem with that. Where they are exactly opposite of matching up you get "Cancellation Nulls" -- a loss of level of that Bass frequency. There's no set definition of what constitutes Bass frequencies, but for purpose of discussion lets focus on frequencies below 150 Hz. That is, you can now "localize" the audio, in your mind, as coming from the direction of one of your speakers. The highest frequency a subwoofer is capable of handling is the highest frequency you should use for the crossover settings. Yep that wavelength for 100 Hz audio is likely BIGGER than at least one of those. The slope rate can be selected. Crossovers take a signal from your mixer that is a left and right channel, and separates them so you can separate signals to different speakers based upon frequencies. We've already talked about the importance of room dimensions vs. the wavelengths of the various Bass frequencies for example. This is a special channel reserved for carrying LOUD Bass -- definitely the sort of stuff you'd want to send to your Subwoofer! I have the crossover frequency set slightly above 100Hz. A good Rule of Thumb is you don't want your Crossover to be higher than 100 Hz. Below is a wiring diagram example to give a visual of how Crossover and PA Management is connected: You do not need to worry about compatibility. Your choice of speakers should be based on coverage requirements and the size of the venue. You might wonder how this can possibly work, since the Subwoofer -- or even multiple Subwoofers -- are not sitting in the exact same position(s) as any of the speakers. Other features of crossover units In addition to frequency separation, crossover units can have other functions. The freq response on the sub is 35 Hz - 120 Hz, with a crossover of 80 Hz, while the freq response on the mains is 58 Hz - 17 KHz, with a crossover … Indeed some of those speakers are likely on the opposite side of the room! Let's take a look at the differences between crossovers and PA management: Crossovers take a signal from your mixer that is a left and right channel, and separates them so you can separate signals to different speakers based upon frequencies. I picked up a Behringer (I know) crossover which has a number of different controls on it. The problem is, they may be able to produce sound down that low, but they won't be able to do so AT VOLUME! If these are the speakers you have to work with, then, of course, this is a problem you will have to live with. When I listen to music, they sound pretty similar. Sending a full-range signal to all speakers within the system, regardless of each speaker’s design, can be problematic. And thus the Bass frequencies they share in producing across that Crossover octave -- from your chosen Crossover Frequency down to 1/2 that frequency -- couple to the room DIFFERENTLY from each of them. Setting a crossover point in the middle of the vocal range can mess up the vocal sound, especially if you use radically different compression settings on each side of the crossover frequency. But second -- and again refer to that table linked above -- this keeps the low frequency end of male dialog from being sent to the Subwoofer! Its actual frequency response is 25hz to 150hz. When adding a Subwoofer into their system, MOST people will use Crossover processing implemented in their Surround Sound Processor -- which is often a set of features built into their Audio Video Receiver (AVR). We've already implied an upper bound on the Crossover Frequency in our discussion above:  If you set the Crossover too high, the Bass will start to become "localizable". And in between, they SHARE the job of reproducing the audio! Meaning you may have to step up to a larger, more expensive model to handle the size of your listening room. It's just that the frequencies BELOW 30 Hz are more "felt" than "heard". The crossover frequency is the frequency at which sound transitions from one speaker to another. From the speed of sound, and the number of cycles per second (Hz) for a given sound, we can calculate the distance spanned by just one such cycle -- its "wavelength". But in addition, all the REGULAR speaker channels can also carry Bass -- with no limit on how low their frequencies can go. This audio doesn't vanish, of course:  THAT'S the audio that's getting steered to the Subwoofer! You may also encounter asymmetric filters where the high pass and low pass filters each use different corner frequencies… Among other things, this keeps them from hopping around as that cone moves! The folks who make Subwoofers will target these demands by marketing different models as Dynamic or Musical! Ideally, the crossover point will be the point when the two filters that make up the crossover intersect at -3dB. But again, expect to have to go up in size (and price!) These Crossovers and PA Management devices are the most popular on the market currently. The range of frequencies a speaker will reproduce (lowest to highest) is in many cases limited. So, if you DO have a range of Crossover Frequency candidates (after thinking through the upper and lower limit considerations described above), one of the best ways to choose between them is to pick the Crossover Frequency which MINIMIZES the inherent, Bass Room Response issues in your listening room! The best crossover points for our ears do not line up with the physics of speakers. As a rule of thumb, the lower the subwoofer’s crossover is set, the better. It gives me the option between 80hz, 90hz, 100hz and 150hz. Picture in your mind the dimensions of your Home Theater viewing room:  Front to Back, Side to Side, and Floor to Ceiling. Welcome to Sound Certified! Because a 30 Hz Crossover means the speaker is expected to contribute quality audio down to 15 Hz! To better visualize this, look at this graph. But there's ALSO the issue of how that speaker "couples" to the room. So the LOWER limit for the Crossover Frequency would be TWICE the bottom end of your regular speakers. Keep in mind, this has to be done for EACH speaker channel. We can be contacted through our contact us page found here. Let's take a look at the basics of mixing live sound , and how you can be quickly on your way to learning to mix. And so even ONE Subwoofer can handle the Bass from ALL the regular speakers without confusing the audio imaging. Now  let's take a look at what we have ranked as the best audio crossover and best PA management for your live sound rig. If they are smaller, bookshelf style speakers there is of course no comparison. What if my regular speakers don't go low enough? That means that one full octave is not necessary in all cases, but you need to account for about 2/3 or so of that frequency range below the x … The concept of the subwoofer is based on the falsehood that you cannot directionalise bass below 80 Hz (some say 200 Hz). Where the different Standing Waves happen to match up you get "Resonance Peaks" -- a boost in level of that Bass frequency. Copyright ©2018-2021 Bob Pariseau. Even taking into consideration these tools are designed to be conservative (after all, they'd really like you to pay for a bigger, more expensive model), the size of Subwoofer you'll find recommended for typical listening rooms can be daunting. I guess experimentation is in order to determine if dialog is improved by adjusting the center channel speaker equalizer settings in the 1-4 kHz range; AND, then playing with the crossover frequency of the center channel speaker to see if increasing the crossover to, say, 120 Hz helps the dialog clarity. At the low frequency end it will come entirely from the Subwoofer (due to the Crossover processing). If the width and depth of the room are different, positions close to the rear wall (near the TV screen) will couple differently than positions close to a side wall. If you have got them installed in the car for your already decent speakers, then setting the crossover frequencies is an even better option to get the most out of it. Any speakers difference in physical locations of the venue SR4722x mains and SR4718x subs less expensive Theater. Powerful DSP, which allow you to connect Subwoofers to be ACCURATE to. 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